diff options
Diffstat (limited to 'clang/lib/Driver/ToolChains/Clang.cpp')
| -rw-r--r-- | clang/lib/Driver/ToolChains/Clang.cpp | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp index 22b830ee838..154e3a86429 100644 --- a/clang/lib/Driver/ToolChains/Clang.cpp +++ b/clang/lib/Driver/ToolChains/Clang.cpp @@ -4875,13 +4875,36 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, CmdArgs.push_back("-fuse-line-directives"); // -fms-compatibility=0 is default. - if (Args.hasFlag(options::OPT_fms_compatibility, - options::OPT_fno_ms_compatibility, - (IsWindowsMSVC && - Args.hasFlag(options::OPT_fms_extensions, - options::OPT_fno_ms_extensions, true)))) + bool IsMSVCCompat = Args.hasFlag( + options::OPT_fms_compatibility, options::OPT_fno_ms_compatibility, + (IsWindowsMSVC && Args.hasFlag(options::OPT_fms_extensions, + options::OPT_fno_ms_extensions, true))); + if (IsMSVCCompat) CmdArgs.push_back("-fms-compatibility"); + // Handle -fgcc-version, if present. + VersionTuple GNUCVer; + if (Arg *A = Args.getLastArg(options::OPT_fgnuc_version_EQ)) { + // Check that the version has 1 to 3 components and the minor and patch + // versions fit in two decimal digits. + StringRef Val = A->getValue(); + Val = Val.empty() ? "0" : Val; // Treat "" as 0 or disable. + bool Invalid = GNUCVer.tryParse(Val); + unsigned Minor = GNUCVer.getMinor().getValueOr(0); + unsigned Patch = GNUCVer.getSubminor().getValueOr(0); + if (Invalid || GNUCVer.getBuild() || Minor >= 100 || Patch >= 100) { + D.Diag(diag::err_drv_invalid_value) + << A->getAsString(Args) << A->getValue(); + } + } else if (!IsMSVCCompat) { + // Imitate GCC 4.2.1 by default if -fms-compatibility is not in effect. + GNUCVer = VersionTuple(4, 2, 1); + } + if (!GNUCVer.empty()) { + CmdArgs.push_back( + Args.MakeArgString("-fgnuc-version=" + GNUCVer.getAsString())); + } + VersionTuple MSVT = TC.computeMSVCVersion(&D, Args); if (!MSVT.empty()) CmdArgs.push_back( |
